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Fukuda K, Matsuda K, Matsuda S, Kado S, Masu H, Dohi H, Nishida Y. Chemosynthetic homologues of Mycoplasma pneumoniae β-glycolipid antigens for the diagnosis of mycoplasma infectious diseases. Bioorg Med Chem 2017; 26:824-832. [PMID: 29373272 DOI: 10.1016/j.bmc.2017.12.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/25/2017] [Accepted: 12/28/2017] [Indexed: 11/26/2022]
Abstract
Mycoplasma pneumoniae expresses β-glycolipids (β-GGLs) in cytoplasmic membranes, which possess a unique β(1 → 6)-linked disaccharide epitope, which has high potential in biochemical and medicinal applications. In the present study, a series of β-GGLs homologues with different acyl chains (C12, C14, C16, and C18) were prepared from a common precursor. An ELISA assay using an anti-(β-GGLs) monoclonal antibody indicated that the synthetic homologues with long acyl chains had greater diagnostic potential in the order C18 > C16 > C14 > C12. Toward a simultaneous detection of natural glycolipids by mass spectrometry (MS), a deuterium-labeled C16 homologue (β-GGL-C16-d3) was prepared and applied as an internal standard for a high-resolution electrospray ionization MS (ESI-MS) analysis. The ESI-MS analysis was used to identify and quantify acyl homologues (C16/C16, C16/C18, and C18/C18) of β-GGL-C16 in cultured M. pneumoniae. A β-GGLs homologue with a 1,2-diacetyl group (C2) was also prepared as a "water soluble" glycolipid homologue and characterized by 1H NMR spectroscopy. We envisage that each of these chemosynthetic homologues will provide promising approaches to solve medical and biological problems associated with mycoplasma infectious diseases (MIDs).
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Affiliation(s)
- Kazuo Fukuda
- Molecular Chirality Research Center, Graduate School of Advanced Integration Science, Chiba University, 648 Matsudo, Matsudo, Chiba 271-8510, Japan; Center for Analytical Instrumentation, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kazuhiro Matsuda
- M. Bio Technology Inc., 2-1-3-1103, Fukasawa, Setagaya-ku, Tokyo 158-0081, Japan
| | - Sachie Matsuda
- M. Bio Technology Inc., 2-1-3-1103, Fukasawa, Setagaya-ku, Tokyo 158-0081, Japan
| | - Sayaka Kado
- Center for Analytical Instrumentation, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Hyuma Masu
- Center for Analytical Instrumentation, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Hirofumi Dohi
- Molecular Chirality Research Center, Graduate School of Advanced Integration Science, Chiba University, 648 Matsudo, Matsudo, Chiba 271-8510, Japan
| | - Yoshihiro Nishida
- Molecular Chirality Research Center, Graduate School of Advanced Integration Science, Chiba University, 648 Matsudo, Matsudo, Chiba 271-8510, Japan.
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Rottem S. "Unique choline-containing phosphoglycolipids in Mycoplasma fermentans". Chem Phys Lipids 2015; 194:94-100. [PMID: 26496149 DOI: 10.1016/j.chemphyslip.2015.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/08/2015] [Accepted: 07/26/2015] [Indexed: 10/22/2022]
Affiliation(s)
- Shlomo Rottem
- Department of Microbiology and Molecular Genetics, The Hebrew University-Hadassah Medical School, Jerusalem 91120, Israel.
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Unique choline-containing phosphoglycolipids in Mycoplasma fermentans. Chem Phys Lipids 2015; 191:61-7. [PMID: 26232667 DOI: 10.1016/j.chemphyslip.2015.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/08/2015] [Accepted: 07/26/2015] [Indexed: 11/21/2022]
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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Abstract
The de novo synthesized polar lipids of Mycoplasma species are rather simple, comprising primarily of the acidic glycerophospholipids PG and CL. In addition, when grown in a medium containing serum, significant amounts of PC and SPM are incorporated into the mycoplasma cell membrane although these lipids are very uncommon in wall-covered bacteria. The exogenous lipids are either incorporated unchanged or the PC incorporated is modified by a deacylation-acylation enzymatic cycle to form disaturated PC. Although their small genome, in some Mycoplasma species, other genes involved in lipid biosynthesis were detected, resulting in the synthesis of a variety of glycolipis, phosphoglycolipids and ether lipids. We suggest that analyses and comparisons of mycoplasma polar lipids may serve as a novel and useful tool for classification. Nonetheless, to evaluate the importance of polar lipids in mycoplasma, further systematic and extensive studies on more Mycoplasma species are needed. While studies are needed to elucidate the role of lipids in the mechanisms governing the interaction of mycoplasmas with host eukaryotic cells, the finding that a terminal phosphocholine containing glycolipids of M. fermentans serves both as a major immune determinants and as a trigger of the inflammatory responses, and the findings that the fusogenicity of M. fermentans with host cells is markedly stimulated by lyso-ether lipids, are important steps toward understanding the molecular mechanisms of M. fermentans pathogenicity.
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Nishida Y, Shingu Y, Mengfei Y, Fukuda K, Dohi H, Matsuda S, Matsuda K. An easy α-glycosylation methodology for the synthesis and stereochemistry of mycoplasma α-glycolipid antigens. Beilstein J Org Chem 2012; 8:629-39. [PMID: 22563361 PMCID: PMC3343289 DOI: 10.3762/bjoc.8.70] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 03/28/2012] [Indexed: 11/23/2022] Open
Abstract
Mycoplasma fermentans possesses unique α-glycolipid antigens (GGPL-I and GGPL-III) at the cytoplasm membrane, which carry a phosphocholine group at the sugar primary (6-OH) position. This paper describes a practical synthetic pathway to a GGPL-I homologue (C(16:0)) and its diastereomer, in which our one-pot α-glycosylation method was effectively applied. The synthetic GGPL-I isomers were characterized with (1)H NMR spectroscopy to determine the equilibrium among the three conformers (gg, gt, tg) at the acyclic glycerol moiety. The natural GGPL-I isomer was found to prefer gt (54%) and gg (39%) conformers around the lipid tail, while adopting all of the three conformers with equal probability around the sugar position. This property was very close to what we have observed with respect to the conformation of phosphatidylcholine (DPPC), suggesting that the Mycoplasma glycolipids GGPLs may constitute the cytoplasm fluid membrane together with ubiquitous phospholipids, without inducing stereochemical stress.
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Affiliation(s)
- Yoshihiro Nishida
- Chiba University, Graduate School of Advanced Integration Science, Matsudo 271-8510, Chiba, Japan
| | - Yuko Shingu
- M. Biotech. Co. Ltd., Setagaya-ku, Fukazawa 2-1-3-1103,Tokyo 158-0081, Japan
| | - Yuan Mengfei
- Chiba University, Graduate School of Advanced Integration Science, Matsudo 271-8510, Chiba, Japan
| | - Kazuo Fukuda
- Chiba University, Graduate School of Advanced Integration Science, Matsudo 271-8510, Chiba, Japan
| | - Hirofumi Dohi
- Chiba University, Graduate School of Advanced Integration Science, Matsudo 271-8510, Chiba, Japan
| | - Sachie Matsuda
- M. Biotech. Co. Ltd., Setagaya-ku, Fukazawa 2-1-3-1103,Tokyo 158-0081, Japan
| | - Kazuhiro Matsuda
- M. Biotech. Co. Ltd., Setagaya-ku, Fukazawa 2-1-3-1103,Tokyo 158-0081, Japan
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